Texas Instruments 60V Input, 3A, Step-Down Converter Evaluation Module TPS54360EVM-182 TPS54360EVM-182 Datenbogen
Produktcode
TPS54360EVM-182
HS
LS
Vout
0.8V
R
= R
0.8 V
-
æ
ö
´ ç
÷
è
ø
Test Setup and Results
1.3
Modifications
These evaluation modules are designed to provide access to the features of the TPS54360. Some
modifications can be made to this module.
modifications can be made to this module.
1.3.1
Output Voltage Set Point
To change the output voltage of the EVM, it is necessary to change the value of resistor R5. Changing the
value of R5 can change the output voltage above 0.8 V. The value of R5 for a specific output voltage can
be calculated using
value of R5 can change the output voltage above 0.8 V. The value of R5 for a specific output voltage can
be calculated using
, where R
HS
is R5 and R
LS
is R6.
(1)
lists the R5 values for some common output voltages assuming R6 = 10.0 k
Ω
. Note V
IN
must be in
a range so the minimum on-time is greater than 135 ns. The values given in
are standard 1%
values, not the exact value calculated using
Table 3. R5 Values for Common Output Voltages
Output Voltage (V)
R5 Value (k
Ω
)
1.8
12.7
2.5
21.5
3.3
31.6
5.0
52.3
Be aware, changing the output voltage can affect the loop response. It may be necessary to modify the
compensation components. See the data sheet for details.
compensation components. See the data sheet for details.
2
Test Setup and Results
This section describes how to properly connect, set up, and use the EVM. The section also includes test
results typical for the EVM covering efficiency, output voltage regulation, load transients, loop response,
output ripple, input ripple, start up and shutdown.
results typical for the EVM covering efficiency, output voltage regulation, load transients, loop response,
output ripple, input ripple, start up and shutdown.
2.1
Input/Output Connections
This EVM includes input/output connectors and test points as shown in
. A power supply capable
of supplying at least 3.5 A must be connected to J2 through a pair of 20-AWG wires. The load must be
connected to J1 through a pair of 20-AWG wires. The maximum load-current capability must be 3.5 A.
Wire lengths must be minimized to reduce losses in the wires. Test-point TP1 provides a place to monitor
the V
connected to J1 through a pair of 20-AWG wires. The maximum load-current capability must be 3.5 A.
Wire lengths must be minimized to reduce losses in the wires. Test-point TP1 provides a place to monitor
the V
IN
input voltages with TP2 providing a convenient ground reference. TP3 is used to monitor the output
voltage with TP4 as the ground reference.
Table 4. EVM Connectors and Test points
Reference Designator
Function
J1
V
OUT
, 5.0 V at 3.5-A maximum
J2
V
IN
(see
for V
IN
range)
J3
EN jumper. Connect EN to ground to disable, open to enable.
TP1
V
IN
test point at V
IN
connector
TP2
GND test point at V
IN
TP3
Output voltage test point at V
OUT
connector
TP4
GND test point at V
OUT
connector
TP5
SW test point
TP6
V
OUT
test point used for loop response measurements
TP7
Test point between voltage divider network and output. Used for loop response measurements.
4
Using the TPS54360 Step-Down Converter Evaluation Module
SLVU769B – September 2012 – Revised September 2012
Copyright © 2012, Texas Instruments Incorporated